P055 ELECTROCARDIOGRAPHIC ABNORMALITIES AND ASSOCIATED FACTORS IN NORMOTENSIVE TYPE II DIABETIC PATIENTS

Background/Objective: Type II diabetes mellitus (T2DM) is a coronary heart disease (CHD) equivalent in the presence of target organ damage or at least three cardiovascular disease (CVD) risk factors. Resting electrocardiography (ECG) is recommended in T2DM patients only in the presence of hypertension or on suspicion of CVD. ECG abnormalities occur early in T2DM, are associated with future cardiovascular events/mortality after adjustment for traditional CVD risk factors. Early screening and detection may improve long term survival in T2DM patients hence, aim of study- to assess the patterns and factors associated with ECG abnormalities in T2DM patients without co-existing hypertension. Methods: One hundred normotensive (BP<130/80mmHg, not on any antihypertensive agent) T2DM patients were recruited consecutively, from the Endocrinology and Diabetes clinics of the Medical Outpatient Clinic and Family Medicine department of the University of Nigeria Teaching Hospital. Consents were obtained, before interviewers, administered questionnaire to get the biodata, T2DM history, complications and treatment. Anthropometric and blood pressure readings were taken using standard methods. A 12-hour overnight fasting blood sample was taken for biochemical assessment of blood glucose, glycated haemoglobin, lipids, urea and creatinine. A 12 lead ECG was performed and interpreted by one cardiologist using the Minnesota ECG code criteria. Descriptive statistics was used for patterns of ECG abnormalities while association between categorical variables were cross tabulated and tested using chi square. Results: Participants were majorly females 68(68.0%), overweight/obese 52(52.0%) with a mean age of 55.56±9.89 years. Duration of T2DM illness post diagnosis was 6.57±6.26years. T2DM was poorly controlled in 92(92.0%) while 93(93.0%) had dyslipidaemia. ECG was abnormal in 56(56.0%) with multiple abnormality in 12(21.4)%. Left atrial abnormality was the commonest 14(25.0%) ECG abnormality. No factor was associated with ECG abnormality. Conclusions: ECG abnormalities are common in T2DM, occurring early in the absence of co-existing hypertension. ECG should be done at diagnosis of T2DM irrespective of CVD risk factors, with frequent monitoring than recommended by guidelines. Table. Pattern of electrocardiographic abnormalities in normotensive type II diabetic patients.